Back-pedaling brake.



No. sa5,7|4.- Patented Oct. 24, I899.

J. a; DAIGNEAU.

BACK PEDALING BRAKE.

(Application filed Fb; 21, 1899.)

(No Modal.) 2 shankshaat WITNESSES //V VE/V 707? Patented Oct. 24,I899.- J. G. DAIGNEAU. BACK PEDALING BRAKE.

(Application filed Feb. 21, 1899.)

2 Sheets$heet 2.

(no Model.)

l/VVE/VTOI? We I ATTORNEY.

ls PETENS 90.. PuomLrmou wasnmurou. n. c.

UNITED STATES JOHN G. DAIGNEAU, OF BUFFALO, NEV YORK, ASSIGNOR TOHIMSELF, A. DE ETTA PEASE, AND EDXVARD ZIMMERMANN, OF SAME PLACE.

BACKBPEDALING BRAKE.

SPECIFICATION forming part of Letters Patent No. 685,714, dated October24, 1899.

Application filed February 21, 1899. Serial No. 706,826. (No modehl ToaZZ whom it may concern:

Be it known that 1, JOHN G. DAIGNEAU, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented certain new and useful Improvements in Back-Pedaling Brakes forBicycles, of which the following is a specification. 7

My invention relates to a detachable backpedaling brake for bicycles,which can be easily attached to or detached from any of the well-knownstyles of safety-bicycles without materially changing or altering theconstruc tion.

It also relates to certain details of construction, all of which will befully and clearly hereinafterdescribed and claimed, reference being hadto the accompanying drawings, in which- Figure 1 is a side elevation ofa portion of a bicycle having my improved brake attached thereto. Fig. 2represents a front view of the brake attachment, illustrating also aportion of the bicycle-frame in section, to which the brake is attached.Fig. 3 is a top plan view of the brake device. Fig. 4 is a detached viewof the brake crank-shaft. Fig. 5 is a sectional View through a bicyclecrank-hanger, illustrating the operating-clutch mounted upon thecrank-shaft. Fig. 6 is an enlarged section on or about line a a, Fig. 5.Fig. 7 is an enlarged view of the clutch mounted upon the rear-wheelhub. Fig. 8 is an enlarged detached view of a portion of the rear hub,also showing the sprocket and its supportingclutch in section. Fig. 9represents an enlarged view of the rear sprocket.

In referring to the drawings for the details of construction, in whichlike numerals designate like parts, 1 represents the frame, 2 the rearwheel and its tire, 3 the chain, 4 the front sprocket, 5 thecrank-hanger, 6 the bicycle crank-shaft and cranks, 7 the cones, and 8the rear hub, all of which are of wellknown construction.

My improved brake device comprises an internally screw-threaded ring 9,adapted to be rigidly screwed upon the crank-shaft in lieu of the outerlock-nut usually employed thereon and having peripheral notches ordepressions 10, in which the clutch rollers or balls 11 are supported;an annular ring 12, which is supported upon the ring 9, theclutch-rollers 11 being interposed between the inner surfaces of thering 12 and the outer notched surface of the ring 9 and acting toprevent the independent rotation of the annular ring 12 upon the ring 9in one direction; a brakespoon 13, pivotally mounted upon a crankshaft14, journaled in the cars 15 of the lower plate 16, which is adapted tobe secured to the bicycle-frame by placing it against the lower surfaceof the horizontal tubes 17 of said frame and arranging an upper plate 18against the upper surface and passing bolts or screws 19 through bothplates to rigidly clamp them upon the frame-tubes; a crankarm 20,extending from one of the outer ends of the brake-operating crank-shaft14; a rod 21., pivotally connected at its respective ends to theopposite end of the crank-arm 20, and an extension or lug 22, projectingfrom the ring 12.

lVhile this brake device can be easily and quickly attached to andremoved from any bicycle of the usual modern construction, it can alsobe dismounted and its parts separated.

The crank-arm 20 is detachabl-y secured to the shaft 14 by the nut 37,being provided with a square socket which fits over the square end 38 ofthe shaft to prevent rotation, the nut screwing upon the screw-threadedextension 39.

The connecting-rod 21 is pivotallysecured to the crank-arm and the lugs22 by the screwbolts 40 and 41, respectively.

The brake-spoon is detachably secured to the center of the shaft 14 bythe removable part 42, which is secured to the spoon by the screws 43,the spoon and part being provided with semicircular grooves whichregister to form a circular opening through which the shaft passes. Tonormally retain the spoon from contact with the tire, a spring 44,preferably spiral in shape, is attached at one end to the spoon and atthe other to the-plate 16, which is provided with an opening throughwhich the end of the spring passes.

The clutch-ring 12 is secured against longitudinal displacement by theouter nut 45, which screws upon the outer screw-threaded reduced portion46 of the ring 9, the outer edge of the enlarged portion forming ashoulder to limit its inward movement, and thus prevent it from lookingthe clutch-ring 12 against rotation. The operation of this portion of myinvention will be readily understood by referring to the foregoingdescription and the accompanying drawings, the back ward movement of thecrankshaft carrying the clutch-ring with it and through theconnecting-rods,moving the brake-spoon into con tact with the tire.

The clutch and its supporting-ring can be easily placed upon anycrank-shaft having a lock-nut for fastening the adj Listing-cone of thebearings in place, the ring acting as a lock nut and also as a supportfor the clutch.

\Vhere the shaft is provided with inner cones and a smooth-surfacedperiphery near the juncture with the crank and exterior tothe bearing,it is advisable to cut a screw-thread upon the periphery of the shaft toreceive the supporting-ring.

The brake is secured to the frame by a clam ping device, which can beattached to any of the modern styles of frames slightly in the rear ofthe crank-hanger.

The rear sprocket is supported upon the rear hub, so that it is capableof rotating in one direction independently of said huh. I preferablyconstruct this portion of myinvention as follows, reference being had toFigs. 7, S, and 9: The rear hub 8 (see Fi 8) is provided with'aperipheral flange 23, to which the spokes are attached, a screw-threadedportion 24, which reduces to form the smooth-surfaced portion 25, and anouter screw-threaded portion 20, and an annular ring 27 is screwed uponthe portion 24 and firmly against the flange 23. This ring has an innerflange or enlarged portion 28 and an outer reduced portion 29, which isprovided with a series of peripheral notches or depressions 30, in eachof which a dog 31 is supported. The sprocket 32 is provided with anannular depression or groove 33 on one side, into which the reducedportion 29 fits, (see Fig. 8,) and the outer edge 34 of the wall of thegroove is notched or serrated, as shown in Fig. 9. The sprocket issecured against horizontal displacement on the hub by the washer 35 andlock-nut 36. By this construction the sprocket, although it is looselysupported upon the hub, can rotate independently thereof in onedirection only, as one or more of the'dogs will drop into the notches 34when turned in a forward direction and prevent its independent movement.

I claim as my invention 1. In a bicycle having a brake device adapted tobe set by back-pedaling, the combination with its wheels, frame,crank-shaft, bearings, and a clutch device for forward driving, of aring having a clutch mechanism adapted to be placed upon thecrank-sl1aft in lieu of the outer lock-nut of the bearings, a platedetachably attached to the frameand having downwardly-extending ears,asupplementary crank-shaft journaled in said ears, a brakespoon supportedupon said crank shaft, a crankarm extending from the supplementaryshaft, a rod pivotally connected at one end to said crank-arm and at theother to the clutch mechanism, and a spring for normally retaining thebrake-spoon from contact with the tire of the bicycle, as set forth.

2. The combination with a bicycle,its frame, integral cranks andcrankshaft, clutch device for forward driving and the bearings having anadjusting-cone, of a lock-nut for said cone, a clutch mechanism mounted011 said look-nut and adapted to revolve in one direction independently,a plate detachably attached to the frame, a supplementary crankshaftadapted to rock in the plate, a brakespoon supported on saidcrank-shaft, a crankarm detachably secured to the end of thesupplementary shaft, a connecting-rod attached to the crank-arm and theclutch mechanism and aspring for normally retaining the brakespoon fromcontact with the tire.

3. In a bicycle having a brake adapted to be set by back-pedaling, thecombination with the frame, front and rear wheels, a clutch device forforward'driving, crank-shaft, and the bearings having an adjustablepart, of a locknut for said adjustable part having peripheral notches,an annular ring mounted upon said lock-nut, balls or rollers supportedin the peripheral notches and interposed between the lock-nut and ring,an upper and lower plate adapted to be clamped to the frame, said lowerplate having downwardly-extending ears, a supplementary crank journaledin said ears, a brake-spoon mounted upon said supplementary crank-shaft,a crank-arm extending from one of the outer ends of the crank and aconnecting-rod at itsends pivoted to the opposite end of said crank-armand the annular ring respectively, as set forth.

4. In a bicycle having a brake adapted to be set byback-ped aling, thecombination with the frame, front and rear wheels, clutch device forforward driving, crank-shaft bearings having an adjustable part, of alock-nut for said adjustable part having peripheral notches, an annularring mounted upon said locknu t, balls or rollers supported in theperipheral notches, and interposed between the locknut and ring, anupper and lower plate adapted to be clamped to the frame, said lowerplate having downwardly extending cars, a supplementary crank j ournaledin said ears, a brake-spoon mounted upon said supplementary crank-shaft,and having an extension provided with a semicircular groove and an outerremovable part also provided with a semicircular groove which registersto form a circular opening through which the supplementary crank-shaftpasses, a crankarm extending from one of the outer ends of the crank-armand a connecting-rod at its ends pivoted to the opposite end of saidcrankarm and the apnular ring respectively, as set forth.

JOHN G. DAIGNEAU. Witnesses:

L. M. BILLINGS, G. A. NEUBAUER.

